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163e529200
The rx headroom for veth dev is the peer device needed_headroom. Avoid ping-pong updates setting the private flag IFF_PHONY_HEADROOM. This avoids skb head reallocation when forwarding from a veth dev towards a device adding some kind of encapsulation. When transmitting frames below the MTU size towards a vxlan device, this gives about 10% performance speed-up when OVS is used to connect the veth and the vxlan device and a little more when using a plain Linux bridge. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
548 lines
12 KiB
548 lines
12 KiB